Property, Plant and Equipment
 12 Months Ended
Jun. 30, 2018
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment

4. Property, Plant and Equipment

 

Property, plant and equipment consist of the following:

  

    June 30,
2018		     June 30,
2017		  
Demonstration and consignment inventory   $ 8,227,878     $ 6,951,583  
Machinery and equipment     2,582,244       2,452,363  
Furniture and fixtures     1,464,325       1,406,758  
Leasehold improvements     691,751       691,751  
Software systems     223,087       —  
Automobiles     22,328       22,328  
      13,211,613       11,524,783  
Less: accumulated depreciation and amortization     (9,023,235 )     (7,794,580 )
    $ 4,188,378     $ 3,730,203  

 

Depreciation and amortization of property, plant and equipment totaled approximately $1,300,000, $957,000 and $1,339,000 for the fiscal years ended June 30, 2018, 2017 and 2016, respectively.